Patents by Inventor JOHN DAI

JOHN DAI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11964989
    Abstract: Compounds that inhibit KRas G12D. In particular, compounds that inhibit the activity of KRas G12D, pharmaceutical compositions comprising the compounds and methods of use therefor, and in particular, methods of treating cancer. The compounds have a general structure represented by Formula (I): or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: July 20, 2022
    Date of Patent: April 23, 2024
    Assignees: Mirati Therapeutics, Inc., Array BioPharma Inc.
    Inventors: Xiaolun Wang, Aaron Craig Burns, James Gail Christensen, John Michael Ketcham, John David Lawson, Matthew Arnold Marx, Christopher Ronald Smith, Shelley Allen, James F. Blake, Mark Joseph Chicarelli, Joshua Ryan Dahlke, Donghua Dai, Jay Bradford Fell, John Peter Fischer, Macedonio J. Mejia, Brad Newhouse, Phong Nguyen, Jacob Matthew O'Leary, Spencer Pajk, Martha E. Rodriguez, Pavel Savechenkov, Tony P. Tang, Guy P.A. Vigers, Qian Zhao, Dean Russell Kahn, John Gaudino, Michael Christopher Hilton
  • Patent number: 11425807
    Abstract: In order to reduce energy loss of a tapped linear driver, it is proposed an LED lighting circuit, comprising an input (Vbus, GND) adapted to receive an input voltage, a plurality of LED segments (LED1, LED2, LED3, LED) connected in series and to the input, a buffer component (C9) connected to an anode and a cathode of a series string of at least two of the plurality of LED segments with respective switches, a current source circuit (B1) in series connection with a parallel connection of the buffer component (C9) and the at least two LED segments, across the input; further comprising a further buffer component (C5) across the current source circuit (B1), wherein said buffer component (C9) and the further buffer component (C5) is in series connection.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: August 23, 2022
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Zhi Quan Chen, John Dai, Liang Shi, Kelvin Wang
  • Patent number: 11375594
    Abstract: A LED lighting circuit has a plurality of LED segments connected in series. A switching arrangement is used to selectively bypass at least one LED segment to implement a tapped linear driver approach. Degrading of a component in the LED lighting circuit is detected, so that a first TLD current modulation scheme is implemented when no such degrading is detected whereas a second current modulation scheme, different from the first current modulation scheme, is implemented to compensate for said degrading. Said degrading is leading to an increase in a turning on voltage of one LED segment, and compared to said first current modulation scheme, said second current modulation scheme has a higher voltage threshold at which said LED segment is switched. In this way, protection may be provided for circuit components and the light output may be maintained at the desired level in the event of component degrading, such as LED chip failure or contact resistance changes.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: June 28, 2022
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Shan Wang, Kelvin Wang, Liang Shi, Zhi Quan Chen, John Dai
  • Publication number: 20220053622
    Abstract: In order to reduce energy loss of a tapped linear driver, it is proposed an LED lighting circuit, comprising an input (Vbus, GND) adapted to receive an input voltage, a plurality of LED segments (LED1, LED2, LED3, LED) connected in series and to the input, a buffer component (C9) connected to an anode and a cathode of a series string of at least two of the plurality of LED segments with respective switches, a current source circuit (B1) in series connection with a parallel connection of the buffer component and the at least two LED segments, across the input; further comprising a further buffer component (C5) across the current source circuit (B1), wherein said buffer component (C9) and the further buffer component (C5) is in series connection.
    Type: Application
    Filed: September 3, 2019
    Publication date: February 17, 2022
    Inventors: ZHI QUAN CHEN, JOHN DAI, LIANG SHI, KELVIN WANG
  • Publication number: 20220030687
    Abstract: A LED lighting circuit has a plurality of LED segments connected in series. A switching arrangement is used to selectively bypass at least one LED segment to implement a tapped linear driver approach. Degrading of a component in the LED lighting circuit is detected, so that a first TLD current modulation scheme is implemented when no such degrading is detected whereas a second current modulation scheme, different from the first current modulation scheme, is implemented to compensate for said degrading. Said degrading is leading to an increase in a turning on voltage of one LED segment, and compared to said first current modulation scheme, said second current modulation scheme has a higher voltage threshold at which said LED segment is switched. In this way, protection may be provided for circuit components and the light output may be maintained at the desired level in the event of component degrading, such as LED chip failure or contact resistance changes.
    Type: Application
    Filed: September 3, 2019
    Publication date: January 27, 2022
    Inventors: SHAN WANG, KELVIN WANG, LIANG SHI, ZHI QUAN CHEN, JOHN DAI